#ifndef __OS_SYSTICK_H
#define __OS_SYSTICK_H
  #ifdef OS_SYSTICK_EXT
    #define OS_SYSTICK_EXT
  #else
    #define OS_SYSTICK_EXT extern
  #endif /* OS_SYSTICK_EXT */

/* public function statement */  
OS_SYSTICK_EXT  void os_systick_handle(void);
    
#endif /* __OS_SYSTICK_H */
